All names: 2MASS J09101643+2105540, SDSS J091016.43+210554.2, Gaia DR3 637142391019402880, TIC 85911578, SDSS J091016.41+210554.2, SDSS J091016.43+210554.20, LAMOST J091016.41+210554.2, Gaia EDR3 637142391019402880, GALEX J091016.5+210555, SDSS J091016.42+210554.2, Gaia DR2 637142391019402880, WDJ091016.44+210554.20, WIRED J091016.43+210554.2, LAMOST J091016.43+210554.2
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Moss et al. 2024 | Genest-Beaulieu & Bergeron 2019 (spectroscopic) | Genest-Beaulieu & Bergeron 2019 (photometric) | MWDD H | MWDD HE | Gaia DR2 | Stilism | Guo et al. 2015 | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | Kleinman et al. 2013 | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 09 10 16.41 (0.06) | 09 10 16.43 | 09 10 16.41 (0.1) | 09 10 16.41 | 09 10 16.44 (0.06) | 09 10 16.41 | 09 10 16.43 | ||||||||||
| Declination | 21 05 54.31 (0.05) | 21 05 54.20 | 21 05 54.31 (0.1) | 21 05 54.31 | 21 05 54.20 (0.05) | 21 05 54.31 | 21 05 54.22 | ||||||||||
| Spectral type | DBA | DB;DBAH? | DB | DBAH | DBAH | DA | |||||||||||
| Effective temperature | [K] | 16700.0 | 15389.0 | 14896.0 | 14364.0 | 15302.0 | 14725.0 (272) | 50000.0 (50) | |||||||||
| log(g) | [cgs] | 8.30 | 8.22 | 8.14 | 8.06 | 8.16 | 8.10 (0.02) | 8.48 (0.02) | |||||||||
| Mass | [M☉] | 0.723 | 0.671 | 0.648 | 0.69 | 0.649 (0.02) | |||||||||||
| log(Luminosity) | [L☉] | ||||||||||||||||
| Cooling age | [Gyr] | 0.2475 | 0.2509 | ||||||||||||||
| log(H/He) | -5.745 | ||||||||||||||||
| log(C/He) | |||||||||||||||||
| log(Ca/He) | |||||||||||||||||
| log(Ca/H) | |||||||||||||||||
| Parallax | [mas] | 10.38 (0.07) | 10.47 (0.1) | 10.38 | 10.38 (0.07) | 10.47 (0.1) | |||||||||||
| Distance | [pc] | 96.33 (0.6) | 95.48 (1) | 96.33 | 96.33 (0.6) | 95.48 (1) | |||||||||||
| Composition | |||||||||||||||||
| Proper motion (right ascension) | [mas/yr] | -31.88332058 (0.07) | -31.56467197 (0.2) | -31.883 (0.07) | -31.56467197 | ||||||||||||
| Proper motion (declination) | [mas/yr] | 7.268012094 (0.07) | 7.040686745 (0.2) | 7.268 (0.07) | 7.040686745 | ||||||||||||
| Variability | |||||||||||||||||
| Magnetic | |||||||||||||||||
| Bd | [MG] | 0.55 | |||||||||||||||
| Infrared excess (disk) | |||||||||||||||||
| Binarity | |||||||||||||||||
| B magnitude | |||||||||||||||||
| V magnitude | |||||||||||||||||
| R magnitude | |||||||||||||||||
| I magnitude | |||||||||||||||||
| J magnitude | 16.36 (0.1) | ||||||||||||||||
| H magnitude | 15.95 (0.1) | ||||||||||||||||
| K magnitude | 16.55 (0.06) | ||||||||||||||||
| u magnitude | 16.21 (0.006) | 16.21 (0.006) | 16.21 (0.006) | 16.21 (0.01) | |||||||||||||
| g magnitude | 16.22 (0.004) | 16.22 (0.004) | 16.22 (0.004) | 16.24 (0.01) | |||||||||||||
| r magnitude | 16.52 (0.005) | 16.52 (0.005) | 16.52 (0.005) | 16.51 (0.01) | |||||||||||||
| i magnitude | 16.78 (0.006) | 16.78 (0.006) | 16.78 (0.006) | 16.80 (0.02) | |||||||||||||
| z magnitude | 17.02 (0.01) | 17.02 (0.01) | 17.02 (0.01) | 17.03 (0.02) | |||||||||||||
| G magnitude | 16.36 (0.005) | 16.39 | 16.36 | 16.36 (0.003) | 16.39 | ||||||||||||
| BP magnitude | 16.31 (0.005) | 16.26 | 16.26 | ||||||||||||||
| RP magnitude | 16.46 (0.006) | 16.47 | 16.47 | ||||||||||||||
| Pan g magnitude | 16.26 (0.002) | ||||||||||||||||
| Pan r magnitude | 16.53 (0.002) | ||||||||||||||||
| Pan i magnitude | 16.78 (0.002) | ||||||||||||||||
| Pan z magnitude | 17.02 (0.007) | ||||||||||||||||
| Pan y magnitude | 17.18 (0.02) | ||||||||||||||||
| E(B-V) | 0.004 | ||||||||||||||||
* Constant surface field
Spectra without link are available upon request
The Montreal White Dwarf Database is produced and maintained by Prof. Patrick Dufour (Université de Montréal) and Dr. Simon Blouin (University of Victoria). Please send database updates, corrections, suggestions or bug reports to patrick.dufour@umontreal.ca.